Halp?

[Raven-Rave]

[lua]

point = {}
function pointseta(ply)

local b = ply:GetPos()
point[x][y][z] = b.x, b.y, b.z
end

concommand.Add("setpoint_a", pointseta)
[/lua]

Right now I'm wanting to set point A to the point table, and further on my idea is to draw a line between point a and b, I just need a little jump to get started, I have no idea what im doing here.

[Cubar]

[QUOTE=Raven-Rave;22834344][lua]

point = {}
function pointseta(ply)

local b = ply:GetPos()
point[x][y][z] = b.x, b.y, b.z
end

concommand.Add("setpoint_a", pointseta)
[/lua]

Right now I'm wanting to set point A to the point table, and further on my idea is to draw a line between point a and b, I just need a little jump to get started, I have no idea what im doing here.[/QUOTE]

You're looking for this [url]http://wiki.garrysmod.com/?title=Surface.DrawLine[/url].

[Crazy Quebec]

Your error is that you are trying to make the field z of the non-existant index y of th non-existant index x of the table point to be able to all 3 of these values. So 2 different kinds of errors coming from a mittle misunderstanding. :smile:

If I were you I would store the position vector as itself. So :
[lua]local point = {}

local function pointseta(ply)

table.insert(point, ply:GetPos())

end

concommand.Add("setpoint_a", pointseta)
[/lua]
[b][url=wiki.garrysmod.com/?title=table.insert]table.insert [img]http://wiki.garrysmod.com/favicon.ico[/img][/url][/b]

And since you saved a vector you can use [b][url=wiki.garrysmod.com/?title=Vector.ToScreen]Vector.ToScreen [img]http://wiki.garrysmod.com/favicon.ico[/img][/url][/b] to get screen positions for drawing.

[Raven-Rave]

Another question, how would I retrieve the X and Y values from the table?

[disseminate]

point[1].x
point[1].y

[editline]10:20AM[/editline]

Assuming you went with Quebec's method

[Cubar]

[QUOTE=Crazy Quebec;22836370]Your error is that you are trying to make the field z of the non-existant index y of th non-existant index x of the table point to be able to all 3 of these values. So 2 different kinds of errors coming from a mittle misunderstanding. :smile:

If I were you I would store the position vector as itself. So :
[lua]local point = {}

local function pointseta(ply)

table.insert(point, ply:GetPos())

end

concommand.Add("setpoint_a", pointseta)
[/lua]
[b][url=wiki.garrysmod.com/?title=table.insert]table.insert [img]http://wiki.garrysmod.com/favicon.ico[/img][/url][/b]

And since you saved a vector you can use [b][url=wiki.garrysmod.com/?title=Vector.ToScreen]Vector.ToScreen [img]http://wiki.garrysmod.com/favicon.ico[/img][/url][/b] to get screen positions for drawing.[/QUOTE]

Mittle? :downs:

[Raven-Rave]

I see, thank you all for helping.

Very helpful to me you guys are

Also I am wondering how this is to be fixed, I guessing I have to make a clientside file for this function?

] setpoint_drawline 
lua\autorun\server\point.lua:35: attempt to index global 'surface' (a nil value)

[Raven-Rave]

Okay I am not sure if I am doing this right but nothing is happening, heres my code atm.

serverside point.lua
[lua]
AddCSLuaFile("autorun/client/cl_point.lua")

local on = false
point = {}

local debug = 1

local function setpoint_a(ply)
table.insert(point, 1, ply:GetPos())

if debug != 0 then
for k, v in pairs(point) do
print(k, v)
end
end

end

local function setpoint_b(ply)
table.insert(point, 2, ply:GetPos())

if debug != 0 then
for k, v in pairs(point) do
print(k, v)
end
end

end

local function setpoint_cleartable()
table.Empty(point)
end

local function setpoint_draw()
timer.Simple(1, function(ply)
umsg.Start("DrawLine", ply)
umsg.Bool(true)
umsg.End()
end, ply)
end

concommand.Add("setpoint_a", setpoint_a)
concommand.Add("setpoint_b", setpoint_b)
concommand.Add("setpoint_draw", setpoint_draw)
concommand.Add("setpoint_clear", setpoint_cleartable)
[/lua]

clientside cl_point.lua
[lua]
include("autorun/server/point.lua")

hook.Add("HUDPaint", "line", function()
if on then
surface.DrawLine(point[1].x, point[1].y, point[2].x, point[2].y)
else
//print("its not on")
end
end)

usermessage.Hook("DrawLine", function(um)
on = um:ReadBool()
end)
[/lua]

No errors, just nothing shows up.